Orcas, Elliott Bay, and the Duwamish

A January 3 Seattle Times story entitled “EPA unveils options for Duwamish cleanup” makes me wonder whether southern residents would enter Elliott Bay more often if the salmon runs were restored to the Duwamish and Green Rivers. In a few years of listening, we’ve not yet detected Southern Residents Killer Whales entering Elliott Bay enough to be heard at the Seattle Aquarium hydrophone. They always seem to stay outside the Bay, beyond a line connecting West and Alki Points…

Is anyone aware of past times when orcas have spent time in Elliott Bay?